For accurate results, the instrument must be calibrated before making any measurements.

The Cable and Antenna Analyzer mode requires calibration standards or external sensors, which are sold separately.

The instrument must be re‑calibrated whenever the temperature exceeds the calibration temperature range window or whenever the test port extension cable is removed or replaced. The instrument must also be re‑calibrated every time the setup frequency changes. Refer to Calibration, CAA for details on how to perform a calibration and the various calibration options available for coaxial cable and waveguide measurements.